Rendered imaged has weird shadows
There are 2 spheres on top of each other - one textured, one pink.

To move them apart select 1 vertex in edit-mode and then select all connected to it with CtrlL. This will select only 1 sphere so they can be separated.

You can also hide selected with H and unhide with AltH so you don't have to move the mesh.

Delete the one you don't want(pink probably).

The 2 spheres were there probably because it was a game-engine model with single-sided polygons - so the textured sphere was for outside and the pink for inside surface. The renderer will render surface from both sides and they are z-fighting.